| mostly | 4 | degree |
| chemical → be made from → petroleum | 6 |
| chemical → include → petroleum products | 4 |
| chemical → be found in → petroleum | 3 |
| negative | neutral | positive |
| 0.264 | 0.553 | 0.183 |
| Raw frequency | 13 |
| Normalized frequency | 0.244 |
| Modifier score | 0.900 |
| Perplexity | 20.034 |